import Vue from 'vue'
import Router from 'vue-router'

// import Login from './components/Login.vue'
// import Home from './components/Home.vue'
// import Welcome from './components/Welcome.vue'
const Login = () => import(/* webpackChunkName: "login_home_welome" */ './components/Login.vue')
const Home = () => import(/* webpackChunkName: "login_home_welome" */ './components/Home.vue')
const Welcome = () => import(/* webpackChunkName: "login_home_welome" */ './components/Welcome.vue')

// import Users from './components/user/Users.vue'
// import Rights from './components/power/Rights.vue'
// import Roles from './components/power/Roles.vue'
const Users = () => import(/* webpackChunkName: "Users_Rights_Roles" */ './components/user/Users.vue')
const Rights = () => import(/* webpackChunkName: "Users_Rights_Roles" */ './components/power/Rights.vue')
const Roles = () => import(/* webpackChunkName: "Users_Rights_Roles" */ './components/power/Roles.vue')

// import Cate from './components/goods/Cate.vue'
// import Params from './components/goods/Params.vue'
const Cate = () => import(/* webpackChunkName: "Cate_Params" */ './components/goods/Cate.vue')
const Params = () => import(/* webpackChunkName: "Cate_Params" */ './components/goods/Params.vue')

// import GoodsList from './components/goods/List.vue'
// import Add from './components/goods/Add.vue'
// import Edit from './components/goods/Edit.vue'
const GoodsList = () => import(/* webpackChunkName: "GoodsList_Add_Edit" */ './components/goods/List.vue')
const Add = () => import(/* webpackChunkName: "GoodsList_Add_Edit" */ './components/goods/Add.vue')
const Edit = () => import(/* webpackChunkName: "GoodsList_Add_Edit" */ './components/goods/Edit.vue')

// import Order from './components/order/Order.vue'
// import Report from './components/report/Report.vue'
const Order = () => import(/* webpackChunkName: "Order_Report" */ './components/order/Order.vue')
const Report = () => import(/* webpackChunkName: "Order_Report" */ './components/report/Report.vue')

Vue.use(Router)

const router = new Router ({
  routes: [
    { 
      path: '/', 
      redirect: '/login' //路由重定向
    },
    {
       path: '/login',
       component: Login
    },
    {
       path: '/home',
       component: Home,
       redirect: '/welcome',
       children: [
         { path: '/welcome', component: Welcome },
         { path: '/users', component: Users  },
         { path: '/rights', component: Rights   },
         { path: '/roles', component: Roles   },
         { path: '/categories', component: Cate },
         { path: '/params', component: Params },
         { path: '/goods', component: GoodsList },
         { path: '/goods/add', component: Add },
         { path: '/goods/edit/:id', component: Edit },
         { path: '/orders', component: Order },
         { path: '/reports', component: Report },
       ]
    }

  ]
})
//全局前置路由守卫
router.beforeEach((to, from, next) => {
  // to 将访问哪一个路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数,表示放行
  //   next() 放行  next('/login') 强制跳转
  if (to.path === '/login') 
    return next()
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
  next()
})

export default router

